A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5950-01-508-1071
NSN 5910-01-378-1689
NSN 5950-01-437-8572
NSN 5990-01-264-9759
NSN 6105-01-640-8017
NSN 5998-00-572-1616
NSN 5990-00-412-0019
NSN 6645-00-399-4551
NSN 5975-00-834-1821
NSN 5960-00-269-4762
NSN 6240-01-400-1311
NSN 6650-01-116-9731